Kole tang could work depending what other fish you have. I like Tomini more as it seems to be more gracious swimmer but Kole tang has nice coloration.
I have tried several dwarf angels and Cherub was the only one that didn't nip at corals. Others I had tried were coral beauty and eibli. Both went after my brain coral. Lemonpeel I didn't even dare to touch after watching a couple of YouTube videos.

That's a pretty decent bioload as it is but a small bristletooth tang could probably work as your last fish. Another thing you can do is add one of the larger fairy wrasses instead. For example, a red velvet fairy wrasse has nice colors and grows up to 4".